Freight train which caught fire in Wales had 25 wagons holding diesel or gas oil

A freight train derailed and caught fire in South Wales (Fran Jones/PA)

A freight train which derailed and caught fire in South Wales consisted of 25 wagons each holding up to 76 tonnes of diesel or gas oil, investigators have said.

The accident happened as the train passed through Llangennech, near Llanelli, at 11.15pm on Wednesday.